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rcsmerge(1)							  rcsmerge(1)
Free Software Foundation			     Free Software Foundation


  rcsmerge - merge RCS revisions


  rcsmerge [options] file


      Use subst	style keyword substitution.  See co(1) for details. For	exam-
      ple, -kk -r1.1 -r1.2 ignores differences in keyword values when merging
      the changes from 1.1 to 1.2.

      Send the result to standard output instead of overwriting	the working

      Run quietly; do not print	diagnostics.

      Merge with respect to revision rev.  Here	an empty rev stands for	the
      latest revision on the default branch, normally the head.

  -Vn Emulate RCS version n. See co(1) for details.

      Use suffixes to characterize RCS files. See ci(1)	for details.


  rcsmerge incorporates	the changes between two	revisions of an	RCS file into
  the corresponding working file.

  Pathnames matching an	RCS suffix denote RCS files; all others	denote work-
  ing files. Names are paired as explained in ci(1).

  At least one revision	must be	specified with one of the options described
  below, usually -r. At	most two revisions may be specified.  If only one
  revision is specified, the latest revision on	the default branch (normally
  the highest branch on	the trunk) is assumed for the second revision.	Revi-
  sions	may be specified numerically or	symbolically.

  rcsmerge prints a warning if there are overlaps, and delimits	the overlap-
  ping regions as explained in merge(1). The command is	useful for incor-
  porating changes into	a checked-out revision.


  Suppose you have released revision 2.8 of f.c.  Assume furthermore that
  after	you complete an	unreleased revision 3.4, you receive updates to
  release 2.8 from someone else. To combine the	updates	to 2.8 and your
  changes between 2.8 and 3.4, put the updates to 2.8 into file	f.c and	exe-

       rcsmerge	-p -r2.8 -r3.4f.c >>f.merged.c

  Then examine f.merged.c. Alternatively, if you want to save the updates to
  2.8 in the RCS file, check them in as	revision and execute co	-j:

       ci -r2.8.1.1 f.c
       co -r3.4	-j2.8: f.c

  As another example, the following command undoes the changes between revi-
  sion 2.4 and 2.8 in your currently checked out revision in f.c.

       rcsmerge	-r2.8 -r2.4 f.c

  Note the order of the	arguments, and that f.c	will be	overwritten.


      options prepended	to the argument	list, separated	by spaces.  See	ci(1)
      for details.


  Exit status is 0 for no overlaps, 1 for some overlaps, 2 for trouble.


  Author: Walter F. Tichy.
  Revision Number:; Release Date: 1993/10/07.
  Copyright  1982, 1988, 1989 by Walter F. Tichy.
  Copyright  1990, 1991 by Paul Eggert.


  ci(1), co(1),	ident(1), merge(1), rcs(1), rcsdiff(1),	rcsintro(1), rlog(1),

  Walter F. Tichy, RCS--A System for Version Control, Software--Practice &
  Experience 15, 7 (July 1985),	637-654.